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Location: Green Bay, WI | I don't understand what the voltage source has to do with what is showing on your display? The fish finders operate on a range of voltage, so as long as you verify that the supply voltage to your front locator is within that specified by the manufacturer, then I don't think that's the problem. Are you saying that your running lights are on the trolling motor circuit, or just that you tapped into that line from the start battery, instead of running a separate line?
If the voltage is correct, then the first thing I would ask is if the front locator is better than the one on your console (that doesn't see these fish)? Maybe the fish *are* in fact there, and the console locator simply doesn't interpret them as fish...
I'd check the voltage in that battery (or at the point where you are tapping off the light circuit) when you're running your trolling motor (or lights). If it's within the range specified by the manufacturer as acceptable, then it shouldn't be a voltage issue.
TB
Edited by tcbetka 5/11/2009 7:28 AM
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